Patents by Inventor Robert A. Dolin

Robert A. Dolin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Multiaccess carrier sensing network communication protocol with priority messages
    Patent number: 5319641
    Abstract: An improved network for communication of message packets. The network of the present invention implements an improved collision avoidance, detection and backoff system for communication on a media between nodes. The apparatus calculates a time period P after detecting the media is idle using a formula F which is a function of a pseudo-random delay factor T. If the media remains idle during the time period P, the device may transmit a message. The apparatus further has the ability to assign messages as being either priority or non-priority messages. Priority messages may be transmitted during priority message slots preassigned to transmitting nodes. Non-priority message contend for the media during a period of time following the period set for transmission of priority messages.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: June 7, 1994
    Assignee: Echelon Systems Corp.
    Inventors: Marek J. Fridrich, Glen M. Riley, Robert A. Dolin, Jr.
  • Network communication protocol including a reliable multicasting technique
    Patent number: 5297143
    Abstract: An improved network for communication of message packets. The present invention provides for improved reliable multicast messaging wherein messages may be reliably multicast to members of a multicast group and acknowledgements may be handled in an improved and efficient manner. In particular, a message may be transmitted to all members of a group, each member of the group responding to receipt of the message with an acknowledgement message. Further, facility is provided to allow for transmissions of reminder messages in the event one or members of a group do not respond to a message with an acknowledgement.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: March 22, 1994
    Assignee: Echelon Systems, Corp.
    Inventors: Marek J. Fridrich, Glen M. Riley, Robert A. Dolin, Jr.
  • Power line communications coupler
    Patent number: 5192231
    Abstract: A coupler for providing coupling for power line communications between the power lines carrying different phases of the power. The coupler engages an ordinary wall outlet such as 220 volt outlet and includes a receptacle for a 220 volt plug. Internally, the adaptor has high frequency coupling between the power lines. The coupling presents a high impedence to the power signal.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: March 9, 1993
    Assignee: Echelon Corporation
    Inventor: Robert A. Dolin, Jr.
  • Method of coupling lf signals by means of power line communications coupler
    Patent number: 5187865
    Abstract: A coupler providing coupling for power line communications between the power lines carrying different phases of the power. The coupler engages an ordinary wall outlet such as a 220 volt outlet and includes a receptacle for a 220 volt plug. Internally, the adaptor has high frequency coupling between the power lines. The coupling presents a high impedence to the power signal.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: February 23, 1993
    Assignee: Intel Corporation
    Inventor: Robert A. Dolin, Jr.